This Faithfull Wire Brush is suitable for cleaning paint or deburring moulds or castings in hard-to-reach areas such as cylinders. It can be used in industrial power tools at higher speeds. Type: Cup Maximum speed: 12,000/min.The FAIWBSI50 Wire Brsh has the following specifications: Face diameter: 50 mm x 20 mm. Shaft: 6 mm (1/4in). Wire: 0.3 mm steel. Conforms to ISO 9001. and DIN EN1083-1 and 2.Additional Information:• Diameter (mm): 50• Wire: 0.30 Crimped Steel